A 51 g ball rolls around a 48-cm-diameter L-shaped track at 53 rpm. What is the magnitude of the net force that the trach exerts on the ball

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

Why does gravity have a lesser than grater effect on higher altitudes?

If water vapor with the mass of 35.0 grams is cooled and condensed into water in a closed system such as a closed glass jar, what is the mass of the water after the water vapor completely condenses? a) 34.5 grams b) 35.0 grams c) 35.5 grams d) the mass cannot be determined without knowing the volume